Scene
i:
In a cave, the weird sisters and Hectate cast spells on Macbeth over
a boiling cauldron, chanting "double, double, toil and trouble"
before Hectate departs. When Macbeth appears, they conjure three ghosts
to answer his questions. The first, an armed head, warns Macbeth against
Macduff. The second, a blood-stained child, tells Macbeth that no
man born of woman can harm him. The third, a child wearing a crown,
says to Macbeth that he will rule Scotland until the forest at Birnam
marches to the castle at Dunsinane. When Macbeth asks whether Banquo's
descendants will rule Scotland, Banquo's Ghost appears once more,
heading a procession of eight kings. The apparitions and the witches
disappear. After they have vanished, Macbeth is told that Macduff
has joined the army of Malcolm. Macbeth vows to slay Macduff and his
family for this "betrayal."
